Diamond Audio 6.5" MP Series 2-Way Full-Range Coaxial Speaker w/1" Horn Tweeter (4Ω) - MP654

Diamond Audio MP654 — 6.5" 2-Way Full-Range Coaxial Speaker with 1" Horn Tweeter (4Ω)

The Diamond Audio MP654 is engineered for riders, boaters, and adventurers who demand high-output, high-clarity audio in demanding environments. Part of the MP Series lineup, the MP654 combines a NEO magnet motor, a 1" horn-style tweeter with a replaceable diaphragm, and a heavy-duty steel basket — delivering 150W RMS with a sensitivity of 101dB (1W/1M) that makes it exceptionally easy to drive loud.

Whether you're mounting these on a Harley Davidson, a boat, or a recreational vehicle, the MP654 is built to perform where standard speakers fail. Water-resistant construction and a cast basket ensure long-term durability in high-vibration, high-exposure environments.

Key Features

• NEO magnet for lightweight, high-efficiency motor design
• 1" horn-style tweeter with replaceable tweeter diaphragm
• Heavy-duty steel basket for durability in harsh environments
• High sensitivity: 101dB (1W/1M) — ideal for low-powered amplifiers
• 12dB 2nd Order crossover filter built in
• Frequency response: 110Hz – 18kHz
• Water-resistant construction (not waterproof)
• Compatible with Harley Davidson, marine, and RV applications

Specifications

Power & Sensitivity

• Power Handling: 150W RMS / 300W MAX
• SPL (dB) MidBass: 92.7
• SPL (dB) Tweeter: 107
• Sensitivity: 101dB (1W/1M)

Thiele/Small Parameters

• Re (Ω): 3.2
• Qms: 10.73
• Qes: 0.47
• Qts: 0.45
• Fs (Hz): 103.3
• Vas (L): 6.6
• Cms (mm/N): 0.24
• Mms (g): 90.7
• Sd (cm²): 138.9
• BL (T*M): 6.5
• Xmax (mm): 1.0
• Hi-Pass Filter: 12dB 2nd Order Crossover

Voice Coil

• Mid Driver: 1.5" Single Layer High Temp 4Ω Voice Coil
• Tweeter: 1.0" 8Ω Single Layer High Temp Voice Coil

Dimensions

• Diameter: 6.5" (165.5mm)
• Mounting Diameter: 5.73" (145.5mm)
• Mounting Depth: 3.33" (91.6mm)
• Total Depth: 3.88" (98.6mm)
• Magnet Diameter: 3.94" (100mm)

Disclaimer: The MP654 speakers are water-resistant, not waterproof. Avoid prolonged exposure to large amounts of water to prevent damage.